Heat Transfer Augmentation using Alufer Tube

Mechanical Engieering

Heat transfer enhancement has been always a significantly interesting topic in order to develop high efficient, low cost, light weight, and small heat exchangers. The energy cost and environmental issue are also encouraging researchers to achieve better performance than the existing designs. Two of the most effective ways to achieve higher heat transfer rate in heat exchangers are using different kinds of inserts and modifying the heat exchanger tubes. The ALUFER tube is the technology behind the advanced heat transfer design. The tube is constructed from an inner (fireside) aluminum alloy finned surface, die-fitted within an outer steel tube, providing exceptional heat exchange characteristics. This finned structure opens opportunities for new heat exchanger designs heat exchangers are very important to the overall efficiency, cost, and size of the system. Thermal conductivity of the ALUFER tube is significantly greater than that of carbon steel. Internal finned surface of the ALUFER tube enlarges the heat exchange surface three-fold. Inner surface of the tube is divided into multiple flow channels to create maximum turbulence and heat transfer.

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